Loom



LOOM

3 Sheets-Sheet l April l, 1930. J. THEXTON JR., ET AL med Feb, 1, 192s.April l, 1930. 1 THEXTQN JR, ET AL 1,752,621

LOOM

Filed Feb. 1, 1928 3 sheets-sheet 2` lllH HI IHI INVENHzn/S:

M4 my April 1, 1930. J. THExToN JR., Er Al. 1,752,621

LOOM

:5 sheets-sheet :5

Filed Feb. l, 1928 l NvEN-im El M M Jaa/17 MMaAWfMQ/@Mf Patented Apr. 1,1930 UNITED STATES PATENT GFFICE JOSEPH THEXTON, JR., AND HENRYTOMLINSN, `OF FALL RIVER, MASSACHUSETTS, ASSIGNORS OF ONE-FOURTH' TOJOSEPH E. FREE-LING AND ONE-FOURTH TO FRANK RILEY, BOTH OF FALL RIVER,MASSACHUSETTS LOOM Application filed February alent thereof for roducinUlain weave are idle for certain periods of time due to the fact thatan'order for fancy goeds must be run off. Heretofore fancy goo-ds, i. e.cloth having a pattern woven therein has been made on a 5 loomespecially adapted for that purpose.

Such a. loom employs several harnesses usually eight to twenty ofspecial make and a complicated harness 'controlling mechanism and isgenerally used foi' n-o other purpose 9 than to weave fancy goods.

Pattern controlling mechanisms now commonly employed in the textileindustry are complicated and therefore relatively expensive and requireconsiderable time in setting f up and making rea'dv for the weavers.Furthermore, they require considerable power for operati-on due to theirmany parts and complicated construction and their speed is limited witha consequent limited output. 0 They also require considerable attentionon the part of the loom fixer and weaver who lin turn are limited as tothe number they can take care of, with a consequent high cost inoverhead expense. rFurthermore the drawing in operation for thesemechanisms which consists of drawing each individual end from the warpsupply through the eyes of the harness heddle and reed, must be done byhand, which operation requires considerable time and labor and keeps theoverhead cost high.

One object of the present invention is Ato provide simple and relativelyinexpensive pattern controlling mechanism for application to a plainloom so that pattern cloth can 5" be woven thereon or the loom may beused for weaving plain cloth.

Another object is to provide mechanism that can be easily and quicklyapplied to such a loom and taken care of after its application q with aminimum amount of labor.

1, 1928. Serial N0. 251,151.

Another object is to provide mechanism requiring little extra power tooperate and capableof a relatively higher speed.

A further object is to provide mechanism which `will require littleattentionE from the loom fixer after it is set up and in operation.

A still furthei object is to provide mechanism which will vpermit thedrawing-in operation to be done by the warp drawing-in machine.

These and other objects of the invention will be clearly understood fromthe following description in conjunction with the accompanying drawings,in which;

Fig. l is aside elevation-cfa loom having attached thereto patterncontrolling mechanism embodying the invention; the parts be ing shown inoperative position.

'Fig 2 is an enlarged vertical section taken on the line 2 2 of Fig. l.

VFig is a viewin perspective ofthe mechanism shown Vin FigJQ'.

Figs. i and 5 are sectional views'itaken on thelines /land 5 5respective'ly'ofFig. l1.

Fig. 6 is a sectional View taken'on the `linel loom equipped withmechanism "embodying the invention.

"F ig. 8 is a similar view of"nai'row che'ck weave such as diiii'ity.

Fig. 9 is adetail view of the 1p'aftternA chain employed in producingythe weave shown in Fig. 8.

Fig. l0 is a :diagram of broken stripe weave shown as'dress goods.

ll is a detail view ofthe pattern chain employed in producing the weaveVshown' in Fig. l0.

As herein shown the"patternrcontrolling mechanism-embodying theinvention is applied to a plain loom of the two harness' type. Referringto Fig. l of the drawings, atL F is shown one of the side frames of'sucha loom whichV is providedl with bearings foiH the crank shaft A20,thecam shaft 21,-the'shaft of spool XV from-which the-warp threadsw aredrawn in the process of weaving,'and

lim

the shaft Q3 of the cloth drum R upon which the finished cloth C iswound after passing over the breast beam B. rllhe crank shaft 2O hasfixed thereto a pulley 2a by which it is driven from any suitable sourceof power (not shown). It is provided with cranks which impart anoscillating motion to the lay beam Z carried by the lay swords 2G towhich the cranks are connected by intermediate links 527. rlhe layswords are pivotcd at 301 to the frame of the loom. The cam shaft 2l isdriven by the crank shaft 20 which has driving connection therewith bygears S. The takeup motion of the loom, shown at T, is of theintermittent type and comprises a. train of gears g and a ratchet 2Swhich receives motion from a pawl 2S) carried by an arin pivoted at 3lto the frame and actuated by one of the lay swords 26. The ratchet Q8 islocked against retrograde movement after each action ot the pawl 29 byone arm 32 of a lever 83 pivoted at 3l to the frame, said arni acting asa locking` pawl. This motion draws down the cloth after it is woven andwinds it upon the drum R.

The shedding motion of the loom is indicated at M and includes sheddingcams, one treadle, front and back harnesses, a coiled spring and aharness roller. The shedding cams indicated at c and c are mounted faston the cam shaft 2l. The cam 0 operates the treadle t which is pivotedat 34 to the frame. The front and back harnesses are indicated at L andL respectively and are connected at their upper ends to the harnessroller a. At its lower end the front harness h is con-v nected to thetreadle t. The treadle ordinarily supplied for the rear harness 7i hasbeen removed and the rear harness has been connected to the fioor by acoiled spring 35. As the front harness h is depressed by the eX- tendedportion of its cani c, the rear harness VL' is raised thus storing upenergy in the spring 35. When the front harness 7L is permitted to risethe rear harness 71, is depressed under the action of the spring 35. Inthis manner the shed indicated at S is formed which permits the passagetherethrough of the shuttle s to lay the weft threads or filling. Theshuttle s, actuated by the picking motion (not shown), travels on thelay beam Z' which is actuated by the crank shaft as heretoforedescribed. At r is shown the reed which beats up the last pick of thefilling after it has been laid in the shed by the shuttle, the constantrepetition of which results in the formation of the cloth.

With the exception of the omission of one treadle and the addition ofthe spring 35 which connects the rear harness h to the floor, theforegoing mechanism may be of any well known construction as it forms nopart of the present invention except in its coinbination therewith tobring about the desired results.

Referring now to Fig. 7 of the drawings there is shown in diagram afragmentary view of handkerchief cloth as it comes oli' the loom whereina designates the body portion which is of plain weave, D designates oneof the borders lnade by the weft threads or filling and which in thisinstance comprises a group of eight cords shown at 3G and seven singlethreads or picks shown at 37. Each cord of this border is made up ofthree threads or picks and each pair of cords has one of the singlethreads or picks therebetween. At al is shown one of the herns which isof plain weave and at e one of the so-called severing cords which inthis instance is made up of three threads or picks. As is well known tothose skilled in the art handkerchief cloth is made up in a large boltcomprising a large number of handkerchiefs and the severing cords arewoven into the cloth at predetermined intervals to define the individualhandkerchiefs, itbeing only necessary for the handkerchief maker to cutalong these lines to divide the cloth into indivdual handkerchiefs whichmay afterwards be finished up in any well known manner. At l is shownone of the borders made by the warp threads which is similar inconstruction to the border previously described.

It is with the weaving of the borders Z) and the severing cords e madeof the weft threads or filling that the invention is concerned and it isone of the objects of the present invention to provide patterncontrolling` mechanism adapted for application to a plain loom of thetwo harness type and capable of producing the pattern above referred to.

In accordance with the present invention and with particular referenceto Figs. l to 3 inclusive of the drawings, at elO is indicated a shaftjournalled in bearings l1 secured to a cross member 2 connecting theside frames F of the loom. A portion of this shaft extends outwardlybeyond one of the side frames and has secured thereto by a set screw 4:2a sprocket 43 which engages a chain herein termed the pattern chain.This chain is provided with a series of cams for a purpose to behereinafter described, and extends upwardly in a plane parallel to theloom frame, and at its upper end runs over a sprocket 45 loosely mountedon a stud 46 which is adjustably secured to a bracket 47 located betweensaid chain and the side frame of the loom. The bracket l? is providedwith an elongated slot 48 for the reception of the threaded end portion49 of the stud 4:6, said stud being fixed in adjusted position by a nut50. The bracket is itself adjustably secured to the side frame of theloom by a stud 5l the reduced threaded portion 52 of which is receivedin an elongated slot 53 in the side frame F to which the inner end ofthe stud is clamped by a nut 54. The stud 5l is provided at its outerend with a reduced threaded portion 55 which is received in the slot ofthe bracket to which it is clamped by a nut 56. The bracket terminatesat its lower end in a fork indicated at 57 which engages the shaft andis held immovably in place thereon between collars 58.

t will thus be seen that adjustment is provided between the side framell of the loom and the bracket 47 for the pattern chain7 and furthermorebetween the bracket 47 and the stud 46 which carries the upper sprocketIn this manner various lengths of pattern chains for a wide variety ofpatterns may be employed.

The pattern chain 44 comprises a series of links for engagement with thesprockets and 45 and is provided on its periphery with knobs or camsarranged in groups and adapied, at certain periods of time during theoperation of the loom7 to actuate mechanism to engage the treadle t andrestrain the harn nesses. As shown in Figs. l and 3 this mechanismincludes an arm having' its npr L end loosely mounted on a stud 6ladjufl secured to an extension 62 on the bracket 4i. The lower end ofthe arm 60 has attached thereto a wire 63 that is connecten to a belt 64that passes around pulleys ano is con nected to a wire 66 that isattached to the low er end of a latch 3 pivoted intermediate its ends at4 to a post 68. The post is ad` ustably secured by bolts 67 to a slottedstand` ard 69 fixed to the floor directly under forward end of thetreadle t. T he f iper i of the latch 3 is provided with a hooed toengage a pin 6 on the forwa the treadle when the treadle engagin'. nismis actuated. The hooked end ot latch 3 is released to free the treadle.whe l tn.A treadle engaging mechanism is inopera l by a coiled spring .7attached at one end te the post and at the other end to the wire 6 shownin Fig. l. i

The arm GO is provided. intermediate its pivot point Gl and itsconnection with the ileXible member which connects it to the latch 3,with a roller 9 which lies in the path of movement of the cams on t epattern chain and normally rests against the plain links thereof due tothe force exerted by the spring 7 in retracting the connections 63, G4and 66.

T he cams on the pattern chain are as heretofore stated arranged ingroups, and as shown for the particular a ttern illustrated in F ig. 7,comprise a group of eight cams inn dicated at 7,0, a single cam 7l, andanother yGroup of eight cams indica-ted at 7" IZ. lietween each pair ofcams in the eight-cam groups is a single plain link. Between t1 group 70 and the single 7l are three in links indicated at 73, and between thesingle cam 7l and the next group 72 are five plain iinks indicated at 74 and between each group roller 9 of the 60.

of cams to complete the chain are sixrplain links indicated at 75.

The group of eight cams indicated at 70 actuates the treadle engagingmechanism above described to restrain the harnesses while the eightcords 36 of the border shown in Fig. 7 are being laid. The seven plainlinks in this group permit the treadle engaging mechanism to release theharnesses under the action of the spring 7 at which time the sevensingle )icl/rs in the border Z) are being laid. As shown in Figs. l and3 the iirst cam of the group 70 is engaging the rihis action has swungthe arm 60 on its pivot to the left as viewed in'Fig. l, causing the armto exert a pull on the lower end of the latch 3 through the intermediateconnections 63, 64 and 66 and force the hooked end 5 of said latch intoengagement with the pin 6 on the forward end of the treadle. Atthis timethe` harnesses are held in a fixed position thus keeping the shed S inthe position shown in F ig. l while the three picks constituting thefirst cord of border Z) are being laid. The single cam 7l actuates thetreadle engaging mechanism in like manner to restrain the harnesseswhile the severing cord e of three picks is being lait. The next groupof eight cams indicated at 72 actuates the treadle enga@ mechanism torestrain the harnesses i the next border (not shown) which is siinilarto border is being laid.

rihe pattern chain 44 is moved to actuate the treadle engaging mechanismby means which will now be described. Secured to the cam shaft 2l forrotation therewith is an eccentric 76 which actuates a pawl 77 having ahook-shaped end c and adjustably secured by a set screw 78 to aprojection 79 onl the eccentric strap 80. The pawl 77 overlies a ratchet81 secured by a set screw 82 to the shaft 40 and is adapted at certainintervals during the operation of the loom to engage the teeth of theratchet and impart a lpartial rotation to the shaft 40 upon which ismounted the sprocket 43 that drives the pattern chain. It will thus beseen that the pattern chain 44 is moved intermittently by the pawl whenthe border and severing cords are woven into the cloth.

Means are provided to prevent the shaft 40 from overrunning under thepull exerted by the pawl 77, and as shown in Figs. 2 and 3 said meanscomprises a wheel 83 fined to said shaft and a flat spring 84 secured tothe loom frame. The wheel 83 is provided with flat surfaces m on itsperiphery corresponding in number to the number of teeth in the ratchet8l and sprockets 43 and 45', said surfaces being adapted to be engagedone at a time by the free end of the spring 84 as the shaft is given itsstep by step rotation. In this man'- ner the ratchet is advanced to theextent of only one tooth by each movement .of the pawl,

the spring 84 preventing its further movement by the pressure exerted onits corresponding surface m on the wheel 83.

Vhen plain weave is being made in the cloth, as in the body and hems ofthe handkerchief, the pawl 77 is disengaged from the ratchet 81 by meanswhich will now be described. Referring to Figs. 1 to G inclusive, at 85is .shown a 'atchet which is loosely mounted on a stud 80 adjustablysecured by a. nut 87 to a bracket 88 which is rigidly fixed to the sideframe F of the loom. This ratchet is intermittently rotated by a pawl(see Figs. 1 and 5) which is pivotally mounted on a stud 124 adi ustablysecured by nuts 89 to a bracket 90 fixed to the lower end of one of thelay swords 2G. The pawl is held in engagement with the ratchet by a fiatspring 91. Loosely mounted on the stud 8G is a gear 92 which isinterlocked with the ratchet for rotation therewith as shown at 93 inFig. 4. The gear 92 meshes with a gear 94 loosely mounted on a stud 95rigidly secured to a bracket 9G fixed to the side frame F. Looselymounted on the stud is a sprocket 11 which is interlocked with the gear94 for rotation therewith as shown at 97 in Fig. 4. This sprocketengages the forward end of a chain 98, herein termed the multiplierchain, which extends rearwardly in a plane parallel to the loom frameand at its rear end runs over a sprocket 99 loosely mounted on the outerend of the shaft 40, which drives the pattern chain. It comprises aseries of links for engagement with the sprockets 11 and 99 and isprovided on its periphery with cams arranged at predetermined intervalsand adapted to engage a roller 12 on the outer end of a lever 13. Thelever 13 (see Figs. 2, 3 and 6) is provided on its inner end with aroller 100 which engages the under side of the pawl 77, and formssupporting means for said pawl during its movement by the eccentric 76.The lever 13 is loosely mounted intermediate its ends on a stud 101projecting from the frame of the loom and is held in place thereon bynuts 14 which are threaded onto the reduced end portion of said stud.The outer roller 12 is normally held in contact with the periphery ofthe multiplier chain by a coiled spring 102 (see Fig. 2) which issecured at one end to the outer arm of the lever and at the other end tothe loom frame. It will thus he seen that when the roller 12 on theouter arm of the lever 13 is riding on the periphery of the plain linksof the multiplier chain, the inner arm will be raised to disengage thepawl 77 from the teeth of the ratchet 81 as shown in Fig. 6. When theouter arm of the lever 13 is raised by the cams on the multiplier chainthe inner arm of the lever is depressed, permitting the pawl 77 toengage the ratchet 81 and impartmotion to the shaft The multiplier chain98 through its cams keeps the pattern chain 44 in motion until thepattern is completed and for the particu lar pattern illustrated in Fig.7 comprises forty-three links consisting of thirty-two plain linksindicated at 15, two links with cams 10 attached thereto, three plainlinks indicated at 17, one link with a cam 18 atn tached thereto, threemore plain links indicated at 19, and two links with cams 103 attachedthereto to complete the chain. The cams 1G, 18 and 103 actuate the lever13 to permit the pawl 77 to engage the ratchet 81 and impart motion tothe pattern chain. As

'shown in Figs. 1 and 3 the cams 10 are engaging the roller 12 on theouter end of the lever 13, thus raising that end of the lever. At thistime the inner end of the lever is depressed, permitting the pawl 77 toengage the ratchet 81 and drive the shaft 40. This shaft is driving thepattern chain which as heretofore stated is actuating the treadleengaging mechanism to restrain the harnesses while the first cord 36 ofthe border l) is being laid. The cams 16 are adapted to actuate thelever 13 to permit continuous operation of the pattern chain until thefirst group of eight.- cams T0 thereon have actuated the trcadleengaging mechanism to rcstrain the harnesses until the border l) iscompleted. At the completion of the border 7) the Cams 16 will havepassed from under the roller 12 and the lever 13 will be actuated by thespring 102 to disengage the pawl 77 from the ratchet 31 thus stoppingthe pattern chain. On the continued movement of the multiplier chain inthe direction of the arrow shown in Fig. 3, the loom will be weavingplain cloth constituting the hem (Z of the handkerchief. This operationtakes place during the travel of the three plain links 17 under theroller 12 of the lever. ldlhen the cam 18 engages the roller 12, thelever 13 is again actuated to permit the pawl 77 to engage the ratchetand drive the pat-tern chain, at which time the severing cord is laid.The travel of the next three links 19 in the multiplier chain nermit theweaving of plain cloth which constitutes the hem u of the succeedinghandkerchief and the cams 1.03 permit the pawl 77 to again engage theratchet and drive the pattern chain while the adjacent border (notshown) is put in. The travel of the plain links designated 15 then givethe time necessary for the loom to make the body of the handkerchiefwhich is of plain weave, before the cams again aetuate the lever 13 topermit the continuation of the pattern.

As previously stated, the take-up motion,

generally indicated at T in Fig. 1, draws down the cloth after it iswoven and winds it upon the drum R. This action must take place afterthe reed r heats up cach pick of the iilling in the plain weave whichconstitutes the body and hems of the handkerchief,

but must be stopped temporarily while the cords of the border-sand thesevering cords are being laid to make the picks thereof more compact inthe finished cloth. Means are provided for checking the take-up motionduring this ope-ration, and as shown in Fig. 1, said means comprises aflexible connection indicated at 105, which is secured at one end to thearm 106 of the locking pawl lever 33 and extends downwardly over theshaft 22 of the spool YW, thence over a pulley 10'( and forwardly to itsconnection at 108 with the lower end of the arm previously referred tofor actuating the treadle engaging mechanism. 'le will thus be seen thatwhen the trcadle engaging mechanismis actuated to restrain the harnesseswhile the cords of the borders and the severing cords are being laid,the-take-np motion will be checked, thus permitting the completed cordto be laid before the cloth is again taken up. llVhen the plain weave ofthe body and hems of the handkerchief is made, the take-up motion willbe permitted to operate as is ordinarily the case after each pick of thefilling is laid.

The operation ofthe herein described loom will be apparent fromV theforegoing descripion but may be briefly reviewed as follows:

Vith the loom in operation and the first cord 36. of the border ZJ beinglaid, the parts will be in the position shown in Figs, 1, 2 and 3,wherein the cams 16 of the multiplier chain 98 are actuating the'lever13to permit the pawl 77 to engage the ratchet S1 and drive the patternchain 14. The first cam .70 on the pattern chain iii is actuating thetreadle latch mechanism to engage the treadle and restrain theharnesses. This action4 holds the warp threads in the formation of theshed S as shown in Fig.` 1 for the passage of the shuttle in laying thethreads of the cord 36. During this operation the takenp motion T hasbeen stopped by the action of the arm 60 and intermediate connection 105in disconnecting the locking pawl 32 from the ratchet 28. This permitsthe cord 36 to be completed before the cloth is again taken up whichresults in more firmly compacting the threads of said cord in thefinished cloth. At the completion of the first cord 36 the pattern chainreleases the treadle engag-` ing mechanism to permit the laying of thefirst single thread 37 of the border at which time the takeup motion Tis permitted to draw down the cloth and wind it upon the druml. In thismanner the entire border is woven, the pattern chain being advancedduring this operation in the direction of the arrow shown in Fig. 3 bythe action of the pawl 77 which engages the ratchet 81 while the lever13 is engaged by the cams 16 on the multiplier chain.V After thecompletion of this border the cams 16 on the multiplier chain releasethe lever 13 fromV upright pressure on the Vpawl 77 and permits thespring 'permitted to operate.

102 to disengage the pawl 77 from the ratchet 81 (see Fig. 2) At thesametimethe treadle latching mechanism is released, thus freeing the treadleand permitting the harnesses to operate under the action of the cam cand the spring 35 to weave the plain cloth constituting one of the hemsd of the handkerchief. During this operation the takeup motion ispermitted to operate in the usual manner. The multiplier chain advancesin the direction of the arrow shown in Fig. 3 dnring this operation andat the completion of the hem thecam 18 on said chain engages andactuates the lever 13 to permit the pawl 77 to engage the ratchet 81 andagain put the pattern chain in motion. During this move-y ment of thepattern chain, the cam 71 thereon actnates the treadle latchingmechanism to engage the treadle to restrain the harnesses while t iesevering cord e is being laid, dnring which operation the takeup motion'is again checked. Thereafter the pawl 77 is disengaged from the racthet81 by the action of lever 13 when the cam 18 passes out from engagementwith the roller 12 during further advance ofthe multiplier chain atwhich time the hem indicated at u in F ig. 7 is woven, during whichoperation the takeupmotion is At the completion of thishem the camslOBon the multiplier chain actuate the leverv 13 to permitthe pawl 77 toagain put the pattern chain in motion. During this movement of thepattern chain tl ecams '7 2 thereon actnate the treadle engagingrmechanism to restrain the harnesses while the adjacent border is beingwoven. After the cams 103 pass from engagement with the lever 13 at thecompletion of this border the harnesses are free to be operated by thecam c and spring 35 to weave the plain cloth constituting the body ofthe handkerchief, such a portion being indicated at a in F ig. 'i'. Itwill be understood that the reed 1 is beating up each pick of theplainweave after it is laid and also that the takeup is operating in theusual manner to wind the finished cloth on the drum Referring now toFig. 8 of the drawings there is shown in diagram a fragmentary view ofdimity cloth made in a loom having pattern controlling mechanismembodying the invention attached thereto. This cloth is known as narrowcheck weave and comprises a series of cords coming off the warp spacedat equidistant short intervals with plain weave therebetween and afilling composed of a series of cords similarly spaced with plain weavetherebetween. As Vherein shown 120 designates the warp cords of threeythreads each and 121 the cords made of the weft threads or iillinghaving three picks each. Between each of the cords 121 is plain weaveindicated at122v having three picks of filling.. The cords 121 intersectthe cords 120 to form narrow checks indicated at 123.,

lVhen narrow check weave such as dimity is made on the loom shown inFig. 1, the pawl 10 is disengaged from the ratchet 85 and is turned downinto the position shown in dotted lines in this figure where it isrigidly secured in place by the nuts 89 on the stud 124, thuseliminating the operation of the multiplier chain 98. The lever 13 isturned up into the position shown in dotted lines in Fig. 2 and securelybolted in that position by the nuts 14 on the stud 101, thus permittingthe pawl 77 to engage the ratchet 81 at all times during this operation.The pattern chain 44 is then removed and a pattern chain 130 having aseries of cams on its periphery arranged as in Fig. 9 is applied to thesprockets 43 and 45. As herein shown this chain is provided with a cam131 on every third link, there being two plain links indicated at 132between each pair of cams. It will thus be seen that a pattern of thistype is laid by the action of the cams of the pattern chain 130 on thetreadle engaging mechanism, said pattern chain being in continuous stepby step rotation under the action of the pawl 77. The take-up motion Tis checked while the cords 121 are being laid as in weaving handkerchiefcloth.

Referring now to Fig. 10, there is shown in diagram a fragmentary viewof brokenstripe cloth made in accordance wit-h the present invention.The stripes indicated at 14() are off the warp and are overlaid orbroken by a single pick of the filling at regular intervals. As hereinshown every fourth pick 141 of the lilling overlays the stripe while thethree picks designated 142 between each pair of picks 141 runsunderneath the stripe. The balance of the cloth is made up of plainweave.

When cloth of the above description is woven, the mechanism is arrangedthe same as for making dimity and a pattern chain similar to the oneshown in Fig. 11 is employed. In this case the take-up motion isdisconnected from the treadle engaging mechanism so that the cloth isdrawn down as it is woven and wound upon the drum R by a continuous stepby step movement.

When the loom is to be used for weaving plain cloth it is simplynecessary to throw the harness engaging mechanism out of operation bysecurely lixing the lever 13 in a position to disengage the pawl 77 fromthe ratchet 81 as shown in Fig. 6, and stop the movement of themultiplier chain 98 by disengaging the pawl 10 from the ratchet 85. Theconnection 105 between the take-up motion and the treadle engagingmechanism is also released.

Due to the fact that the mechanism hereindescribed is applied to a plainloom in a manner to cooperate with the two harnesses thereon to controlthe pattern, the drawing-in operation which consists of drawing eachindividual end from the warp through the eyes of the harness heddle andreed may be performed by a machine known as a drawingin machine. Thisoperation is now done by hand on the looms equipped with patterncontrolling mechanisms now in conuuou use.

From the foregoing description it will be seen that a plain loomequipped with pattern controlling mechanism embodying the invention isadapted to weave plain cloth in a inanner and as effectively as if itwere without a ttachments. It is also adapted at very short notice toweave pattern cloth of comparatively wide check weave such ashandkerchief cloth and the like, narrow check weave such as dimity andthe like, and broken-stripe cloth such as dress goods, shirting, etc.

Furthermore the pattern controlling mechanism hereindescribed iscomparatively simple and can be made and attached to a loom for abouttwenty per cent of the cost of similar mechanisms now in common use. Dueto its simplicity it requires less attent-ion which results in a savingof labor. As is well known in the textile industry, one fixer now takescare of not over one hundred and twenty looms for weaving plain cloth orsixty looms for weaving pattern cloth. As to power, it takesconsiderably less with this attachmentapplied to a plain loom, and as tospeed the output can be as high as one hundred and eighty picks perminute against a maximum of one hundred and sixty picks with the loomsnow employed for weaving pattern cloth. As to weaving costs, at thepresent time one operator runs eight to ten plain looms at a weekly wageof eighteen dollars, or six to eight looms for weaving pattern cloth ata weekly wage of twenty-four dollars. lith this attachment on a plainloom one operator could handle from eight to ten looms for weavingpattern cloth at a weekly wage of eighteen dollars.

It will thus be seen that the output per operator is greater and thecost in wages less than for previous methods of weaving pattern cloth.Furthermore, the mechanism hereindescribed may be attached to as manyplain looms in a mill as is desirable without interfering with theweaving of plain cloth thereon, or without requiring extra 'Hoor spaceas is the case where pattern controlling meehanisms now employed areattached to special looms adapted for the sole purpose of weavingpattern cloth.

The foregoing advantages therefore result particularly in a lower firstcost, less power consumed, lower labor costs, increased pro` duction anda saving in floor area.

We claim:

1. In, combination with a loom for weaving plain cloth, an attachmentfor said loom comprising a pattern-controlling chain and a pair ofsprockets therefor. shafts ou which said sprockets are mounted, a seriesof cams mounted on said chain raranged in predetermeans whereby saidshaft drives said cam carrier, a series of cams mounted on said carrierand means actuated by said cams `to restr in the harnesses forpredetermined intervalsof time while the weft threads con- `tinue to belaid and thereby control the number ofthreads in a cord in the pattern,said rcstraining means comprising Ian arm, a support to which one end ofsaid arm is pivoted, a flexible member connected to the other end ofsaid arm, a guide around which said flexible member passes, a latch towhich the other Vend of said flexible member is connected, said latchbeing provided with a hook adapted to engage the harness treadle torestraint-he movement of the harnesses.

3. In combination with a loom. adapted to weave plain cloth,anattachment'for-the loom comprising a rotary shaft, a cam carrier, aseries of cams mounted on said carrier and Vmeans actuated byV said camsVto restrain the harnesses for predetermined intervals of'time While theweft threads continue to be laid and thereby control the number ofthreads in a cord in the pattern, said restraining` means comprising anarm, a support to which one end of said arm is pivoted, a belt, theother end 'of said arm beingconnected to one end of said belt, a guidearound whichsaid belt passes, a latch to 4which the other endofsaidbeltis connected, a harness andrtreadle, said latch being adapted toengageV the harness treadle to restrainthe movement of the harnesses,and means which are operative to release the saidllatch from the harnesstreadle when the cam on the pattern chain is disengaged from said arm.

4. In combination with a loom adapted to weave plaincloth, an attachmentfor the loom comprising a rotary shaft, a cam carrier, meanswhereby.said shaft drives said carrier, aseries of cams mounted on said carrierand means actuated by said cams to restrain the harnessesforpredetermined intervals of time while the `weft threads continuewhichonefendl of said arm, is pivoted, a belt, the other end; of, saidarmrbeing connected to one endete-said belt;agu1de around which saidbelt passes, a latch to which the Vother end of said belt is connected,a harness and treadle, said latch being adapted to engage the harnesstreadle to restrain the movement of the harnesse-s, said pivoted armhaving a member in position adapted to be engaged by the several cams onsaid cam carrier to rock said arm and actuate the intermediateconnections whereby the rocking of said arm will cause the latch to makelocking engages ment with the treadle.

5. In combination with a loom adapted to weave plain cloth havingharnesses, an attachment for the loom whereby it is adapted to weavechecks or broken stripes, said attachment comprising a rotary shaft, asprocket made fast thereto, a second sprocket, a pattern chain inoperative engagement with both of said sprockets, a series of camsmounted on said chain and means actuated by said cams to restrain theharnesses for predetermined intervals of time while theweft threadscontinue to be laid and thereby control the numbe `of threads in a cordin the pattern and means for intermittently actuating the pattern chain,said means comprising a ratchet mounted on the shaft which carriesfthefixed sprocket, a feed pawl engaging with said ratchet, a rotary camshaft, shedding cams mounted thereon and an eccentric mounted on thesaid cam shaft. Y

6.111 combination with a loom adapted to weave plain cloth, anattachment for the loom comprising al rotary shaft, a sprocket madefastthereto, a second sprocket,a pattern chain in operative engagementwith both of said sprockets, a series of cams mounted onsaid chain andmeans actuated by said cams to restrain thelharnesses for ypredeterminedintervalsl of time while the weft threads continue'to be laid andthereby control the number of threads in a cord in the pattern, meansfor intermittently actuating the pattern chain, said means comprising aratchet mounted on the shaft which carries the fixed Yfixed sprocket andratchet, said means consisting of a wheelmonnted fastV on said shaft,said wheel having flat faces on its 'periphery and a spring brake whichengages said flat faces.

7. In combination with a loom adapted to Weave plain cloth havingharnesses, aA harness treadle` andy a cam shaft with 'a cam adaptedltoactuate the harness treadle, an attachment for-theloom whereby it isadapted to Weave checks or broken stripes, said attachment comprising arotary shaft, a sprocket made fast thereto, a second sprocket, a patternchain in operative engagement with both of-said sprockets, aseriesofoams mounted on said chain and means actuated by said cams torestrain the harnesses for predetermined inter-falso'l time while thevfelt threads continue to be laid and thereby control he number ofthreads in a cord in the pattern,

means for interniittently actuating the pattern chain, said meanscomprising said cam shaft, a ratchet mounted on the shait which carriesthe fixed sprocket, a feed pawl engaging with said ratchet and aneccentric mounted on the said cam shaft, means for disengaging the feedpawl from said ratchet, said means comprising lay swords, a ratchetloosely mounted on a stud and a pawl pivotally mounted on a memberprojecting from one of the said lay swords, a sprocket, a multiplierchain which at one end engages with said sprocket and has drivingconnection with said last named ratchet, a series of cams carried bysaid multiplier chain at predetermined intervals which are adapted to engage one end of a lever, said lever being pivoted intermediate its ends,the other end of said lever engaging the pawl which actuates the patternchain feed, said lever normally holding the feed pawl out of engagementwith the feed ratchet and cams on said multiplier chain which areadapted to tip said lever and permit the pawl which actuates the patternchain to engage the driving ratchet of the pattern chain.

8. In combination with a loom adapted to weave plain cloth, anattachment for the loom whereby it is adapted to weave checks or brokenstripes, said attachment comprising a rotary shaft, a sprocket made fastthereto, a second sprocket, a pattern chain in operative engagement withboth of said sprockets, a series of cams mounted on said chain and meansactuated by said cams to restrain the harnesses for predeterminedintervals of time while the weft threads continue to be laid and therebycontrol the number of threads in a cord in the pattern, means forintermittently actuating the pattern chain, said means comprising ashaft, a cam carried by said shaft adapted to actuate the harnesstreadle, a ratchet mounted on the shaft which carries the fixed sprocketof the pattern chain, a feed pawl engaging with said ratchet and aneccentric mounted on the said cam shaft, means for disengaging thepattern chain feed pawl from its ratchet, said means comprising layswords, a ratchet loosely mounted on a stud and a pawl pivotally mountedon a member projecting from one of the lay swords, a sprocket mounted ona stud carried by the frame, said last named ratchet having drivingconnection with said sprocket, a multiplier chain engaging said sprocketand a sprocket mounted on the shaft that drives the pattern chain, alever pivoted intermediate its ends, a series of cams carried by saidmultiplier chain at predetermined intervals which are adapted to engageone arm of said lever, the other arm of said lever engaging the pawlwhich actuates the pattern chain feed, whereby when one of the cams onthe multiplier chain engages the said lever it will tip the leverthereby permitting the pawl to engage with the feed ratchet and feed thepattern chain and means whereby when the said cam is disengaged from thesaid lever, said lever will be tipped in the reverse direction anddisengage the driving pawl from the pattern chain driving ratchet.

9. In a two harness loom having a cloth take-up motion including aratchet and pawl feed, a treadle to operate the harnesses, a take-upfeed, a feed ratchet, a pivoted arm and means connected therewith forlocking the treadle at predetermined times and means for suspending thecloth take-up motion while the treadle is locked during the laying of aplurality of picks, said means comprising a lever, a locking pawlcarried thereby adapted to engage with said feed ratchet to restrain themovement of the take-up feed, and a flexible member connected at one endwith one arm of said locking pawl lever, said flexible member beingconnected at its other end with said pivoted arm of the harnessrestraining mechanism.

10. In combination with a loom adapted to weave plain cloth, anattachment for the loom comprising a rotary shaft, a cam carrier, meanswhereby said shaft drives said cam carrier, a series of cams mounted onsaid carrier and means actuated by said cams to restrain the harnessesfor predetermined intervals of time while the weft threads continue tobe laid and thereby control the num ber of threads in a cord in thepattern, an arm pivoted at one end to a support, a flexible memberconnected to the other end of said arm and means connected with saidflexible member adapted to restrain the movement of the harnesses.

11. In combination with a loom adapted to weave plain cloth, a carrieron which are mounted a plurality of cams, means actuated by said camsfor restraining the movement of the harnesses for predeterminedintervals while the weft threads continue to be laid and thereby controlthe number of threads in a cord in the pattern, said restraining meanscomprising an arm pivoted to a support, a flexible member connected atone end to said arm, the other end of said flexible member beingconnected to a latch adapted to restrain the treadle and means which arerendered operative to release the latch from the treadle when the camcarrier is disengaged from said arm.

12. In combination with a loom adapted to weave plain cloth, a carrieron which are mounted a plurality of cams, means actuated by said camsfor restraining the movement of the harnesses for predeterminedintervals while the weft threads continue to be laid and thereby controlthe number of threads in a cord in the pattern said restraining meanscomprising an arm pivoted to a support, a flexible member connected atone end to said arm, the other end of said flexible member beingconnected to a latch adapted to restrain the treadle, means which arerendered operative to release the latch from the treadle when the camcarrier is disengaged from said arm, and means carried by said pvotedarm adapted to be actuated by said cams to cause the latch to makelocking engagement with the treadle.

In testimony whereof We affix our signatures.

JOSEPH THEXTON, JR. HENRY TOMLINSON.

